Tflite-model-maker generated SAVED_MODEL is not working

This is my colab test notebook that uses @khanhlvg 's dataset and training jobs.
The only difference is that I extracted in SAVED_MODEL format.

Unfortunately, this saved model doesn’t work…
and it also unable to convert to TFJS as you can see #6824

Where did I go wrong? please let me know.

Is your ultimate goal to use the object detection model in TF.js? If that’s the case, please export the model as TFLite and use the TFLite Task Library for TF.js to run the model.